Ei Design Inc. provides engineering and mechanical consulting services. The company offers electrical, lighting, controls, and instrumentation designing; mechanical services focusing on heating, ventilation, and air conditioning; steam distribution and hot water heating systems; energy analysis studies; thermal storage and pneumatic controls; and laboratory fume hood systems, power distribution; emergency power systems; system verification and testing; site development; waste water collection, treatment, and disposal; and sewer system analysis service, plumbing engineering including piping layout, meter testing and sizing, flow and pressure profile, system zoning, remote monitoring, hydraulic modeling.

Our Engineers are integral members of the design team, from concept through construction, helping to successfully deliver many of the firm high-level projects. Our creative process integrates design and building physics to address today’s environmental and economic challenges while preparing our clients for the future.

Ei Design Inc. engineering solutions increase occupant comfort, optimize energy-efficient outcomes and reduce life-cycle costs. By using sophisticated, next-generation design tools and collaborating with our architectural colleagues to enhance the vision for a project, we contribute to great design and create high-performance, cost-effective environments.

Our team is made of experienced experts who identify issues early on, provide creative and cost-effective solutions and work as part of a team for the client, end users and other consultants.




  • Central Heating and Cooling
  • Duct Design Optimixation
  • Exhaust System
  • Humidity Control
  • Mech/Elect Title 24 Compliance
  • Lighting Design
  • Power Distrubution
  • Lighting Photometrics
  • Emergency Power System
  • Power service Upgrade
  • Domestic Water Distrubution
  • Sanitary Waste System
  • Process Piping
  • Compressed Air Design
  • Sewage Injectors
  • Steam Boiler and Hot Water System
  • Grease Interceptors
1250 Corona Pointe Ct. STE 201 Corona, CA 92879 +1 (951)251-0136